On the Cirripede Genus Stramentum. 65 
according to Tesch’s key (Zool. Meded. Leiden, iii. 1917, 
p. 235), into the neighbourhood of S. eydouai, M.-E., and 
S. granosimana, Miers. In the former species, as redescribed 
by Tesch (/. ¢. p. 150), the upper margin of the palm of the 
chelipeds is provided with a “ distinct, horny-coloured, granu- 
late crest,” and the outer surface is very minutely granulated 
and has a short oblique ridge about the middle. In 98. grano- 
simana, of which I have examined the two syntypes, the 
outer surface of the palm is rather coarsely and evenly granu- 
late, its upper margin has a low denticulate crest, the upper 
margin of the immovable finger is (except for a notch near 
the base) nearly straight, and the walking-legs have no 
brushes of short fur on the anterior surface of the carpus and 
propodus of the first three pairs as they have in 8. dehaani 
and S,. boulengeri. 
The specimens of S. boulengeri presented to the Museum 
thirty-six years ago were accompanied by a note on the 
habits of the species by the collector, Mr. Lionel E. Adams, 
as follows :-— Collected at Basra, 60 miles up the Euphrates, 
in perfectly fresh water; burrows in the banks of the river 
and especially in a canal in connexion with the river, where 
it climbs the fibrous roots of trees laid bare to the extent of 
6 or 7 feet at low tide (there being 4 or 5 feet of tide at 
Basra) by the aid of the large claws. Sometimes they ascend 
the trunks to the height of 10 feet.” 
VI.—The Cirripede Genus Stramentum (Loricula): its History 
and Structure. By Tuomas H. Wiruers, F.G.S. 
[Plates IIL. & 1V.] 
(Published by permission of the Trustees of the British Museum.) 
Introduction. 
AurnoucH the cirripede generally known as Loricula is 
represented by more specimens approacling completeness 
than is any other Cretaceous cirripede, still our knowledge 
of its structure has not greatly advanced since 1851, when 
Darwin redescribed Loricula pulchella, G. B. Sowerby, the 
first-discovered member of the genus. Particularly does this 
apply to the number, structure, and homologies of the 
capitular valves and to the peduncle when complete, on 
which points there have since been wide differences of 
opinion, 
Ann. & Mag. N. Mist. Ser. 9. Vol. v. i) 
